public class Selflearn_10_about_forloop {
    public static void main(String[] args){
        boolean istrue=true;
        NAME_OF_A_LOOP:
        for(;true;){
            for(;istrue;){
                break NAME_OF_A_LOOP;
            }
        }
        System.out.println("你已跳出循环");
    }
}
